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Thread: Can I turn VGA to RCA???

  1. #1
    Timid Neo Newbie

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    Can I turn VGA to RCA???

    I'm trying to run a MVS on a standard Television.Now, I know how to convert video from the Jamma into VGA (splicing,and soldering into a VGA plug),but how can I convert that signal into Video for a standard Rca input for my standard res Television?N e one?Thanks!

  2. #2
    Guerilla Warrior
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    You would need something that converts 15 KHZ RGB to something the TV can use. A JROK would be something to use.

  3. #3
    Timid Neo Newbie

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    dude thanks,but whats a JROK?can you link me info.or where I can get one.

  4. #4
    Guerilla Warrior
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    http://www.jrok.com/hardware/RGB.html

    That will tell you everything you need to know.

  5. #5
    Charles Barkley Amano Jacu's Avatar
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    Re: Can I turn VGA to RCA???

    Originally posted by Bolt Dizel
    I'm trying to run a MVS on a standard Television.Now, I know how to convert video from the Jamma into VGA (splicing,and soldering into a VGA plug),but how can I convert that signal into Video for a standard Rca input for my standard res Television?N e one?Thanks!
    I think you didn't understand this right... You can't connect a regular arcade board to a VGA just "splicing,and soldering into a VGA plug", you need some device like the XRGB that converts the 15 khz RGB video to VGA.

    If what you want is RCA (I would suggest s-video instead) you need a RGB to NTSC convertor like the JROK.

  6. #6
    Timid Neo Newbie

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    well gentlemen,I'm looking up the info on all this conversion right now.Although I was previousely suggested S-Video,but I have no input at all.My monitor is a Standard res rca input (TV).But what I dont understand is what needs to be converted just to get video.I've got a wring diagram for a VGA plug and what goes where.RGB Sync and ground(from the pcb) is all I need,correct?Then whats the problem in just converting VGA into RCA Video with just an adapter.
    Does anyone have a setup like mine?I dont own a cabinet but im planning on building a small (portable)portable version of one,and just want to connect it to a regular Television.What do you guys recommend for a budget of 50 bucks(its whats in my pocket now)?Thanks.

    BTW that JROK page does not load...checking connection.

  7. #7
    Charles Barkley Amano Jacu's Avatar
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    The problem is that the low-res RGB output from a JAMMA board like MVS is 15 khz, while regular VGA monitors only accept 30 khz (or something like that). That's why you need an upscan convertor.

  8. #8
    Timid Neo Newbie

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    Hey Amano,
    I don't think you understand.I'm not trying to turn jamma to VGA,but simply trying to get a way to get jamma video on an rca(or composite video)television.Understand?I understand i need to convert Mhz but an Upscan converter allows me to play on vga,thats what I read.Although where i work,you can simply run jamma video into a vga monitor or any standard res monitor used in videogame machines,but they run for about 200-400 us dollars.
    I mean ,am I better off bying a nice sized Television with S-video?will it have ok picture quality?what is the best type of video to get good picture quality on a monitor?
    I do appreciate youre help,but i need more Q's answered,still researching.Thanks.

  9. #9
    Robert Garcia's Butler

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    there is no simple way of conversion. you need a circuit that converts R, G, B and synch into composite video. that can't be done by just hooking up synch + GND, since arcade boards simply don't output composite video.
    --
    Arakon

  10. #10
    Timid Neo Newbie

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    Ok,that i can understand.But,HOW do I get video to work then?

  11. #11
    Mizuki's Demon
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    Originally posted by Bolt Dizel
    Ok,that i can understand.But,HOW do I get video to work then?
    You buy a JROK and use it to convert the RGB over to composite.

  12. #12
    Timid Neo Newbie

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    Gentlemen,Thank you all.I've solved my problem with JROKs part.I should of just listened to 300Wins in the first place.Now I can move onto the next step in my mini arcade jig.btw SNK is F'in sweet.

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